Porcine small intestine submucosa as a flexor tendon graft

Clinical Orthopaedics and Related Research
K DerwinJ Iannotti

Abstract

An attractive strategy for tendon tissue engineering is the use of natural extracellular matrices as scaffold materials. One matrix that has been shown to promote healing and regeneration of neotissue in various applications is porcine-derived small intestinal submucosa. It was the objective of this study to investigate small intestinal submucosa for intrasynovial flexor tendon grafting in a canine model. We hypothesized that at 6 weeks small intestinal submucosa grafts would undergo host cell infiltration, neovascularization, and replacement by host neotendon. We also hypothesized that small intestinal submucosa grafts would be incorporated by the host without extensive adhesions to surrounding tissues and therefore maintain normal digit function. An intrasynovial tendon autograft was used as a gold standard. At 6 weeks the intrasynovial tendon autografts remained viable, contained normal numbers of cells along their length, and had minimal peritendinous adhesions. Four of six autografts had normal function as determined by rotation of the distal interphalangeal joint. Also at 6 weeks, the small intestinal submucosa grafts had host cell infiltration, neovascularization, and wavy, oriented tissue. However, ubiquitous adhesions ...Continue Reading

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Citations

Aug 24, 2010·Sports Medicine, Arthroscopy, Rehabilitation, Therapy & Technology : SMARTT·Catherine K KuoRocky S Tuan
Sep 8, 2016·Journal of Biomedical Materials Research. Part a·Jenna L DzikiStephen F Badylak
Jul 9, 2008·Disability and Rehabilitation·Pankaj Sharma, Nicola Maffulli
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Jun 4, 2021·Acta Biomaterialia·Jingyi HouHai-Quan Mao
Sep 20, 2006·Biomaterials·Derek M DoroskiJohnna S Temenoff

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